VERDER CARBOLITE GERO LHT 5/30 Manual

Installation, Operation and Maintenance Instructions
500°C Laboratory High Temperature Oven - LHT Model: 30 Litres
No Controller
LHT 5/30 + No Controller
MEN-LHT5030-006_NOCTRL (06-08-2019)

Contents
This manual is for guidance on the use of the Carbolite Gero product specified on the
front cover. This manual should be read thoroughly before unpacking and using the
furnace or oven. The model details and serial number are shown on the back of this
manual. Use the product for the purpose for which it is intended.
1.0 Symbols and Warnings 4
1.1 Switches and Lights 4
1.2 General Warnings 4
2.0 Installation 6
2.1 Unpacking and Handling 6
2.2 Siting and Setting Up 6
2.3 Electrical Connections 7
3.0 Temperature Controller 9
4.0 2132 Over-Temperature Controller Description (if fitted) 10
4.1 Description 10
4.2 Operation 10
4.2.1 Controls 10
4.2.2 Operation 11
4.2.3 Over-Temperature Operation 11
4.2.4 Over-Temperature Alarm 11
4.2.5 Resetting the Over-Temperature Alarm 11
4.2.6 Sensor Break 11
4.3 Audible Alarm 12
4.4 Navigation Diagram 12
5.0 Operation 13
5.1 Operating Cycle 13
5.2 Over-Temperature Control (if fitted) 13
5.3 Explosive Vapours 13
5.4 Atmospheres 14
5.5 Operator Safety 14
5.6 Solenoid Valve with Manual Switch (if fitted) 14
5.7 Variable Speed Fan (if fitted) 15
5.8 Exhaust Fan (if fitted) 15
5.9 Stoving and Curing (if fitted) 15
5.9.1 Pre-heater (if fitted) 15
6.0 Maintenance 16
6.1 General Maintenance 16
2

6.2 Maintenance Schedule 16
6.2.1 Cleaning 18
6.3 Calibration 18
6.4 After-Sales Service 18
6.5 Recommended Spare Parts and Spare Parts Kit 18
6.6 Power Adjustment 18
7.0 Repairs and Replacements 20
7.1 Safety Warning - Disconnection from Power Supply 20
7.2 Safety Warning - Refractory Fibre Insulation 20
7.3 Panel Removal 21
7.3.1 Side Panel 21
7.3.2 Internal Element Cover 21
7.4 Temperature Controller Replacement 22
7.5 Solid-State Relay Replacement 22
7.6 Thermocouple Replacement 22
7.7 Element Replacement 22
8.0 Fault Analysis 23
A. Oven Does Not Heat Up 23
B. Oven Overheats 23
9.0 Wiring Diagrams 24
9.1 WV-11-01 24
9.2 WS-10-01 - Isolating for 208 V version only 25
10.0 Fuses and Power Settings 26
10.1 Fuses 26
10.2 Power Settings 26
11.0 Specifications 27
11.1 Environment 27
3

1.0 Symbols and Warnings
1.0 Symbols and Warnings
1.1 Switches and Lights
Instrument switch: when the instrument switch is operated the
temperature control circuit is energised.
Solenoid valve (if fitted): see section 5.6 for full details
Variable speed fan (if fitted): see section 5.7 for full details
Exhaust fan (if fitted): see section 5.8 for full details
Stoving and curing (if fitted): see section 5.9 for full details
1.2 General Warnings
DANGER – Electric shock. Read any warning printed next to this
symbol.
WARNING: Risk of fatal injury.
DANGER – Hot surface. Read any warning printed next to this
symbol.
WARNING: All surfaces of a product may be hot.
4

DANGER – Read any warning printed next to this symbol.
Caution – Double Pole/Neutral Fusing
5
1.0 Symbols and Warnings